122 



AZALEA 



AZALEA 



Gt. 16:556. Gng. 4:279. -A valuable species, with large 

 but scentless fls. A large number of varieties and hy- 

 brids has been raised, which are well adapted for forcing 

 purposes and also for groups in the open, being as hardy 

 as the American species. See Rhododendron for picture. 

 CC. Corolla with very short tube, rotate-campanulate 

 or two-lipped, glabrous outside : segments ob- 

 tuse: stamens 7-10. (Rhodora.) 

 D. Limb of corolla %-lipped, not spotted, the two 



lower segments divided nearly to the base: fls. 



before the Ivs. 



9. Canadensis, O. Ktze. (Rhodbra Canadensis, Linn. 

 Rhododendron Rhodbra, Don). From 1-3 ft.: Ivs. oval, 

 obtuse and mucronulate, glaucous and slightly pubes- 

 cent beneath : fls. 5-7, on very short pedicels 1-1% in. 

 broad, rose-purple ; segments narrow, the lower ones 

 revolute ; stamens 10. Apr.. May. E. N. Amer. : New- 

 foundland to Pa. Em. 2: 441. B.M. 474. 



10. rh6mbica, O. Ktze. (Rhododendron rhdmbicum, 

 Miq. ) . Shrnb, 3-8 ft. : Ivs. rhombic-elliptic, acute at both 

 ends and sparsely hairy above, yellowish pubescent at 

 the nerves beneath : tts. 2-3 ; corolla l%-2 in. broad, 

 somewhat campanulate, bright rose-colored, segments 

 oblong; stamens 10. Apr., May. Japan. B.M. 6972. Gt. 

 17:586; G.C. III. 20: 38. 



DD. Limb of corolla rotate-campanulate, or slightly 

 %-lipped, divided usually till below the middle : 

 upper lobes spotted. 



11. Vaseyi, Rehder (Rhododendron Vaseyi, Gray). 

 From 5-15 ft. high ; branchlets without bristles : Ivs. 

 oblong or oblong-lanceolate, acute, sparsely hirsute : 

 fls. before or with the Ivs.; corolla slightly 2-lipped, 

 lower lobes widely spreading; stamens 7, rarely 5. Apr., 

 May. N. Car. G.F. 1:377. G.C. III. 20: 71. -Excellent. 



12. Albrechti, O. Ktze. (Rhododendron Albrechti, 

 Maxim.). From 2-5 ft.: branchlets glandular-pilose: 

 Ivs. obovate or elliptic, acute, 3-5 in. long, appressed- 

 pilose above, pubescent along the veins beneath : fls. 

 purple, with the Ivs. 2 in. broad ; stamens 10. Japan. 



13. Schlippenbachi, O. Ktze. (Rhododendron Schlip- 

 penbachi, Maxim.). Three to 5 ft.: branchlets glandu- 

 lar-pilose : Ivs. cuneate, broadly obovate, 2-5 in. long, 

 rounded and mucronate at the apex, hirsute on both 

 sides or glabrous at length : fls. with the Ivs., 2-3 in. 

 broad, pale rose-colored, upper lobes spotted reddish 

 brown : stamens 10. May. Japan. B.M. 7373. Gn. 

 46:972. G.C. III. 19:561. 



BB. Lvs. and fls. from the same terminal bud : winter 

 buds with 2-4 scales of nearly equal length : 

 corolla glabrous outside: Ivs. usually persistent. 

 (Tsusin.) 



14. tndica, Linn. (Rhododendron Indicum, Sweet). 



Figs. 175, 176. From 

 1-8 ft.: branchlets, 

 Ivs. and pedicels more 

 or less rufously ap- 

 pressed-strigose :lvs. 

 lanceolate or obo- 

 vate : fls. 1-3 ; calyx 

 densely setose, not 

 glandular, with usu- 

 ally small lobes ; co- 

 rolla pink or purple, 

 upper segments spot- 

 ted ; stamens 5-10. 

 China, Jap. Gn. 50, 

 p. 192; 54, p. 487. 

 R.B. 20:121: 21:85; 

 23:37. A.G. 14:473. 

 Gng. 4: 359. F. E. 

 9:431. F.R. 2:579. 

 This is a very vari- 

 able and much-cul- 

 tivated species, and 



the following varieties are often described as species. 



(1) Lvs. lanceolate or elliptic, acute, 2-3 in. long, dull 

 above and rufously strigose : shrubs. 2-8 ft. 

 high, somewhat loosely branched. 



Var. Kaempferi, Rehder. Lvs. deciduous, only a few 

 small ones below the fl.-buds persisting till spring, 



elliptic, bright green : fls. 2-3, with or before the Ivs. ; 

 calyx-lobes oval, rounded ; corolla 1-2 in. broad, pink 

 or orange-red; stamens 5, with yellow anthers. Apr., 

 May. Jap. This is the hardiest variety ; hardy even 

 in New Eng. 



Var. Simsi, Rehder (A. Indica, Sims, not Linn.). 

 Lvs. persistent, dark green, lanceolate : fls. 1-3, rose- 



175. Azalea Indica (X %}. 



176. Double-flowered Azalea Indica (X 



colored or carmine ; calyx-lobes lanceolate ; stamens 

 10, with purple anthers. May, June. China. B.M. 

 1480. L. B.C. 3: 275. 



(2) Lvs. obovate or obovate-lanceolate, obtuse, rarely 

 acute ; Yi-% in. long, less strigose, and usually 

 shining above : low, much-branched shrubs. 



Var. macrantha, Reichb. (A.macrdntha, Bunge. A. 

 Danielsiana, Paxt.). Lvs. coriaceous, dark green, 

 shining, obovate or oval : fls. usually single, 2-3 in. 

 broad, pink or purplish pink ; stamens 5-10, usually 

 enclosed. May, June. China. P.M.I: 129. S.B.F.G.II. 

 3: 261. From this variety nearly all of the beautiful 

 garden forms of the Indian Azaleas have originated by 

 cross-breeding with other varieties and forms of ^4. 

 Indica introduced from Japanese and Chinese gai'dens, 

 and by hybridizing, especially with A. rosmarinifblia. 

 To this variety may be referred the following re- 

 markable forms : Var. crispifldra, Van Houtte. Fls. 

 large, rose-colored, with distinctlv crisped segments. 

 F.S. 9:887. B.M. 4726. Var. lateritia, Lindl. Lvs. 

 oblong-lanceolate : fls. salmon or brick-red. B.R. 1700. 



Var. rosifldra, Rehder ( A. rosiflbra, Flor. Mag. A. 

 balsaminceflbra, Carr. A. Rdllissoni, Hort. ).Lvs. ob- 

 long-lanceolate: fls. salmon-red, very double, with im- 

 bricated, oblong segments, resembling the blooms of a 

 camellia-fid, balsam. F.M. 19:418. Gn. 18:249. 

 R.H. 1882:432. 



Var. obtusa, Rehder (A. obtusa, Lindl.). Lvs. obo- 

 vate or ovate, obtuse : fls. 1-3, pink or orange-red ; 

 corolla 1-1 % in. broad, lobes oval-oblong; stamens 5, 

 exserted, anthers yellow. May. China, Jap. B.R. 

 32:37. G.C. II. 25:"585. R.H. 1876: 370. Var. obtusa 

 alba, Hort. Fls. white. G.F. 9:395. Var. calycifldra, 

 Rehder (A . calycifldra, Hort. ) . Fls. brick-red, corolla 

 double (hose-in-hose). 



Var. amoena, Rehder (A. amoena, Lindl.). Lvs. obo- 

 vate or elliptic, obtuse or acute, %-l in. long, dark 

 green: corolla usually double (hose-in-hose), purple, 

 %-l in. broad ; stamens 5. Apr., May. China, Jap. 

 B.M. 4728. F.S. 9:885. G.C. III. 23: fig. 125. A.G. 

 15:373; 18:568. Gng. 2: 385. A. F. 12:33. F.E. 9:573. 

 Flowering early and very abundantly ; hardy north 



